We announce with great pleasure the publication of the 2008 impact factor of 1.649, released on June 22, 2009 by the Journal Citation Reports, ISI Web of Knowledge. Our journal ranks now 13/49 in the category Agronomy. On the behalf of the editorial board and EDP Sciences, I warmly congratulate all authors, peer-reviewers and editors for this success.

Dr. Eric Lichtfouse, Editor-in-Chief.